135421117254 has 24 divisors (see below), whose sum is σ = 297431771832. Its totient is φ = 44522010720.

The previous prime is 135421117253. The next prime is 135421117261. The reversal of 135421117254 is 452711124531.

135421117254 is a `hidden beast` number, since 13 + 5 + 421 + 1 + 172 + 54 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135421117253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51528792 + ... + 51531419.

It is an arithmetic number, because the mean of its divisors is an integer number (12392990493).

Almost surely, 2^135421117254 is an apocalyptic number.

135421117254 is an abundant number, since it is smaller than the sum of its proper divisors (162010654578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135421117254 is a wasteful number, since it uses less digits than its factorization.

135421117254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103060292 (or 103060289 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The spelling of 135421117254 in words is "one hundred thirty-five billion, four hundred twenty-one million, one hundred seventeen thousand, two hundred fifty-four".